A game that seemingly appeared from nowhere and then descended back into the abyss. Unique enemy design, intimidating atmosphere, tactile gunplay, and an incredible challenge for you and three other mates.
The last perfect thing before the world ended. Frenetic action that left your palms sweaty, and your smoker's cough breathy. Bookended with DLC that was truly reminiscent of the past - it was actually good!
It's all well and good to be a game that inspires generations of subsequent games, but it's another thing entirely to still be a riot to play some 20 years later.